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Automotive Relays

Automotive relays are for use in 12 volt electrical systems. Relays are used when you need to switch higher currents than a switch can handle, or when you want to isolate an electrical circuit. Our relays have either 5 contacts or 4 contacts. Relays with 5 contacts are called Changeover Relays, and are capable of switching between two separate output circuits - a normally open circuit and a normally closed circuit. Similar to a single pole single throw ON-ON switch, these relays can 'change over' from one circuit to another, and can be used to either turn a circuit on, or turn a circuit off. We carry relays for different amperage ratings. Our 30 amp relay is our most economical. It is a 5 terminal change over relay with a plastic housing and built in mounting tab. Our 40 amp relay is our most popular 5 pole relay and features a removable metal mounting tab. Our 50 amp relays also come in sealed versions with a resistor or diode across the relay coil. Our 60 amp relay offers the highest switching capacity in the standard Bosch 5 pin layout. Even higher power switching is available in our 4 pole 80 amp relay and 200 amp relay. We also carry a very popular pre-wired relay socket. The sockets can also be locked together if needed. For an overview of how a relay operates, please watch our instructional video.

9 products
Pre-Wired Relay Socket
Pre-Wired Relay Socket - Relay socket is pre-wired with 5 color-coded wire leads. Socket is a molded base 5 pole design. Fits all of our...
50 Amp Automotive Relay
50 amp Automotive Relay - Five terminal automotive relay capable of switching up to 50 amps. Normally closed terminals can switch 40 amps....
12 Volt Automotive relay - 50 Amp Sealed
50 amp Sealed Automotive Relay - Five terminal fully sealed automotive relay is capable of switching up to 50 amps. Normally closed...
12 Volt Power Relay - 80 Amp Capacity
80 Amp 12 Volt Relay - High power surface mount relay capable of switching up to 80 amps at 12 volts DC. Power connections utilize 5/16"...
200 Amp 12 Volt High Power Relay
200 Amp 12 Volt High Power Relay - Hi power 12 volt relay capable of switching up to 200 amps. Great relay for circuit or battery...